JP2010188353A - Melt distributing apparatus of non-ferrous metal melt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a general system for rationalizing devices of a melting furnace and a melt holding furnace related to exchange of a melt with a melt distributing apparatus of a non-ferrous metal melt and automating melt distributing operation from the melting furnace to the melt holding furnace by relating these plural devices to each other. <P>SOLUTION: The melt distributing apparatus is configured of a suspension running device 4 which is suspended from two parallel suspension rails 5 and travels; a ladle 2 having a melt discharge pipe 2a at an end face in a direction orthogonal to the suspension rails and holding the melt by having a melt receiving port 2b in a position opposite to the melt discharge pipe; a support frame 6 for rotatably supporting the ladle by a bearing part with the melt discharge pipe as an axis; a ladle inclination device 3 for discharging the melt by allowing the ladle to be tilted around the melt discharge pipe from a horizontal position to an upward position; and a lifter device 7 mounted between the suspension running device and the support frame and vertically moving the support frame which supports the ladle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hot water distribution apparatus that automatically conveys a molten non-ferrous metal such as an aluminum alloy or a zinc alloy in a melting furnace to a molten metal holding furnace before die casting.

  Conventionally, factories that manufacture die castings of non-ferrous metals such as aluminum, zinc, and alloys thereof have a melting furnace that is a parent furnace and a molten metal holding furnace that is installed in close proximity to supply hot water to multiple die casting machines. Composed of a combination. In this case, as a means for transporting the non-ferrous metal melt melted in the melting furnace to the melt holding furnace, a ladle (ladder) transporting vehicle traveling on the ground or a ladle transport using an overhead traveling crane has been used.

In recent years, large non-ferrous metal die-casting plants have emerged, and it has become necessary to transport molten metal from the melting furnace of the main furnace to a plurality of molten metal holding furnaces. With the conventional transportation means, safety, labor saving, equipment cost, site There was a big problem with the utilization of For example, in the case of a ladle truck traveling on the ground, it is necessary to secure a traveling passage, maintain it, secure operators, prevent hot water leakage due to shaking during traveling, etc. Because it travels through the ceiling space, it is easy to secure the passage, but for that purpose it is necessary to increase the height of the eaves of the building and consider the traveling load of the crane and the molten metal ladle. In addition, it was necessary to secure skilled operators who were used to transporting molten metal.

  In order to solve these problems, a molten metal transfer device that can be unmanned running suspended from a suspension rail has appeared, and the safety of molten metal conveyance, the maintenance of molten metal quality during conveyance, and labor saving have been achieved. It was. As this prior art, a molten metal transfer device is disclosed (Reference 1).

JP-A-8-174196, [0011-0014], [FIG. 1], [FIG. 2]

  This prior art is a self-propelled ladle transporter that has excellent device contrivance for opening and closing the ladle lid for heat insulation, but it uses an electric hoist to move the ladle up and down. The total height of the ladle is large, and since the hot water from the ladle is tilted, the discharge position of the molten metal from the ladle cannot be fixed.

  The present invention was made to solve the above-mentioned problems, and its purpose is to lower the overall height of the factory with a hot water distribution facility with a reduced overall height to reduce the building construction cost and maintenance cost, In addition, the position of the molten metal outlet from the ladle can be fixed without changing as the molten metal is discharged, facilitating the pouring work, and the accuracy of the pouring speed can be increased. And a streamlined system for melting and holding furnaces related to the exchange of molten metal, and by linking these multiple devices to automate the hot water distribution operation from the melting furnace to the molten metal holding furnace. It is to provide.

  A non-ferrous metal molten metal distribution apparatus according to claim 1 of the present invention is a distribution apparatus that receives molten metal from one or a plurality of melting furnaces and transports the molten metal to a plurality of molten metal holding furnaces, and includes two parallel suspension rails A suspension traveling device that suspends from the suspension rail, has a tapping pipe on an end face in a direction orthogonal to the suspension rail, and has a hot water inlet at a position facing the tapping pipe, and a ladle that can hold the molten metal, A support frame that rotatably supports the ladle with a bearing portion having a tapping pipe as an axis; and a ladle tilting device that tilts the ladle upward from a horizontal position with the tapping pipe as an axis to discharge the ladle. The lifter device is provided between the suspension travel device and the support frame and moves up and down the support frame that supports the ladle.

  According to the present invention, the discharge of the molten metal from the ladle does not need to be concentrated by concentrating the flow of the molten metal at the outlet as in the conventional ladle, and can be discharged if there is molten metal in the extended line of the tapping pipe. Therefore, it is not necessary to make the ladle into a complicated shape such as a cubic curve, and it may be a box shape with a polygonal cross section, so that the production of the ladle body and the enforcement of the refractory are easy. In addition, when the ladle is tilted to discharge hot water, the position of the outlet of the hot water pipe is fixed without moving into the hot water, so handling such as transfer of the molten metal to the subsequent process becomes extremely easy. In addition, the adjustment of the hot water speed can also be performed finely by the tilting operation. In addition, it is not necessary to remove or shift the ladle lid when pouring the hot water, so that it is possible to prevent the temperature of the molten metal from lowering and oxidation. Further, as described above, since the ladle shape is a simple shape, the tapping rate for turning the ladle can be finely adjusted, and the remaining amount of the molten metal can be estimated with high accuracy.

  Since the hot water distribution apparatus of the present invention performs mechanical connection of the mechanism from the suspension traveling apparatus to the support frame and the ladle and the height position of the ladle through the lifter device, compared with the case of using the suspension wire, In this way, the positional accuracy of the ladle tap and the hot water tap with the suspension rail as the origin is high.

  A non-ferrous metal molten metal distribution device according to claim 2 is the non-ferrous metal molten metal distribution device according to claim 1, wherein the lifter device has two electric screw jacks arranged in an X shape. It is characterized by being.

  With this configuration, when the lifter device is closed like a pantograph, the overall height can be kept low, so the overall height of the hot water distribution device can be lowered. As a result, the position height of the suspension rail connected from the building is also reduced, leading to a reduction in the overall height of the building, leading to a reduction in the construction cost of the building. In addition, even a low-rise factory building that uses a conventional ladle transporter can be modified by applying the hot water supply apparatus. In addition, the electric screw jack is a compact device that requires only electrical wiring including control, as compared with other fluid pressure jacks, and is easy to maintain.

  A non-ferrous metal molten metal distribution device according to claim 3 is the non-ferrous metal molten metal distribution device according to claim 1 or 2, wherein the ladle has a molten metal capacity of 80 to 1000 kg. .

  Since it is a hot water supply device having the above-described configuration, it becomes possible to increase the capacity of the ladle compared to the conventional self-propelled hot water supply device, and can be 80 to 1000 kg. It is possible to increase the size from 80 kg to 320 kg and Zn from the conventional 250 kg to 1000 kg.

  According to a fourth aspect of the present invention, there is provided a hot water discharge apparatus for a melting furnace according to any one of the first to third aspects, wherein the molten iron is supplied to the hot water inlet. In addition, a communication pipe provided with a tap plug connected to the molten metal holding chamber of the melting furnace is provided at the lower part, a hot water supply room provided with a hot water discharge pipe inclined upward from the lower part, and a pressure pipe connected to the upper part of the hot water supply room with a low pressure. It is comprised from the pressurization adjustment apparatus which introduces the air which pressure-adjusted from this variable pressure blower. Further, a melting furnace tapping apparatus according to claim 5 is the melting furnace tapping apparatus according to claim 4, wherein the pressurization adjusting device is provided at the top of the tapping pipe with the molten metal level in the tapping chamber and the upward slope. The total amount of hot water and the hot water speed are controlled by setting and adjusting the discharge pressure of the variable pressure blower by using the hot water level sensor provided.

  As described above, the hot water outlet of the present invention is easy to position the hot water outlet and hot water outlet of the ladle with the suspension rail as the origin, so the hot water outlet from the melting furnace and the hot water outlet of the hot water supply device can be accurately positioned. In particular, it is possible to combine them even in automatic driving.

  According to the configuration of claims 4 and 5, the molten metal in the tapping chamber is supplied to the molten metal level held in the melting furnace by gravity by opening and closing the tap stopper, and the molten metal supplied from the tapping chamber to the hot water distribution device is also in the tapping chamber. By increasing the surface area of the molten metal, hot water can be supplied by pressurizing with a low pressure (for example, 1000 mmAq) blowing pressure, and hot water can be supplied with an appropriate amount of hot water by setting the blowing pressure according to the hot water supply level of the hot water supply chamber. Moreover, since the upward inclined pipe which is easy to operate the hot water level sensor which grasps the hot water supply state is adopted, the movement of the molten metal level can be detected more sensitively than the vertical pipe. With the configuration and operation described above, it is possible to automatically supply hot water to the hot water supply apparatus based on the molten metal level in the hot water supply chamber.

  A degassing apparatus for a molten metal holding furnace according to a sixth aspect of the present invention is the degassing apparatus for a molten metal holding furnace according to any one of the first to third aspects, wherein the molten metal is supplied from the outlet pipe. A gas apparatus comprising an upper hot water receiving tub, a lower hole provided with a communication hole communicating with a molten metal holding furnace, a rotary blade immersed in the molten metal and discharging an inert gas from the rotary blade portion It is characterized by that. Further, a degassing apparatus for a molten metal holding furnace according to claim 7 is the degassing apparatus for a molten metal holding furnace according to claim 6, wherein the inert gas is discharged at a low capacity during a period when the molten metal is not introduced, When the molten metal is introduced from the hot water tank, in addition to discharging at a high capacity, the amount of inert gas is adjusted and discharged with respect to the molten metal inflow amount corresponding to the tilting amount of the ladle of the hot water supply device. It is characterized by. Further, a degassing apparatus for a molten metal holding furnace according to claim 8 is the degassing apparatus for a molten metal holding furnace according to claim 6, wherein the rotor blades rotate at a low speed during a period in which no molten metal is introduced. When molten metal is introduced from the hot water tank, in addition to rotating at high rotation, the rotation is adjusted with respect to the molten metal inflow amount commensurate with the tilt amount of the ladle of the hot water supply apparatus.

In the degassing apparatus of the present invention, H ₂ contained in an Al-based molten metal is removed in association with bubbles by bubbling an inert gas, for example, N ₂ or Ar, while stirring the molten metal. This is to improve the quality of the. Since this degassing device is installed in front of the molten metal holding furnace, and the hot water distribution device as the previous process is easy to position the hot water outlet of the ladle as the origin of the suspension rail as described above, It is sufficiently possible to match the hot water outlet of the degassing device and the hot water outlet from the hot water supply device accurately, particularly in automatic running. In addition, the present degassing apparatus can efficiently perform the molten metal degassing process with an inert gas blowing amount and a rotating blade rotation speed corresponding to the amount of hot water supplied from the hot water supply apparatus. That is, the amount of hot water discharged is calculated from the amount of tilting of the ladle of the hot water distribution apparatus, and the inert gas blowing amount and the rotating blade rotation speed are automatically set to efficiently perform the degassing process.

  The fully automatic molten metal conveyance processing system according to claim 9 according to the present invention is a non-ferrous metal molten metal conveyance process including the hot water distribution device, the molten metal melting device, and the molten metal holding furnace degassing device. Of the melting furnace to be performed from the melting furnace to the receiving and degassing of the melting furnace based on the designation of the melting furnace to be received, the designation of the molten metal holding furnace to be received and the setting of the amount of hot water distribution Controls such as hot water control, running control of hot water distribution equipment, hot water receiving and hot water control of hot water distribution equipment, and degassing control of the degassing equipment of the molten metal holding furnace are linked, systematically and comprehensively performed by a computer. Is performed using sequence control and control of pressure, weight, flow rate, temperature, and the like.

  In the conveyance and processing of the molten metal constituted by the hot water supply device according to claims 1 to 7, the hot water discharge device of the melting furnace and the degassing device of the molten metal holding furnace, one or a plurality of melting furnaces and a plurality of molten metal holdings are performed. A hot water supply apparatus of the present invention intervenes a manufacturing process composed of a furnace by automatic traveling and automatic operation, and the molten metal is conveyed and processed by a computer comprehensively. With the configuration according to claim 9, since the non-ferrous metal molten metal transfer process can be performed almost unattended, and can be safely and accurately performed because it is a transfer and processing operation that does not involve humans, labor saving, energy saving, and product quality assurance Can contribute.

  According to the non-ferrous metal hot water distribution apparatus according to claims 1 to 3 of the present invention, the pouring operation is facilitated because the outlet position of the molten metal from the ladle can be fixed without changing with the discharge of the molten metal. In addition, since the shape of the ladle is a simple polygonal box, the capacity can be easily increased, and the accuracy of the hot water supply speed by tilting can be increased. Connections can be made efficiently and work automation can be applied. In addition, since the lid of the ladle is hardly required to be opened and closed, the temperature of the molten metal can be prevented from being lowered and the molten metal can be prevented from being oxidized, and the quality of the molten metal can be maintained. In addition, since the lifter device is adopted, the total height of the hot water distribution facility can be lowered, and the total height of the factory can be lowered to contribute to the reduction of building construction costs and maintenance costs. In addition, it is easy to modify and install this hot water distribution device from the viewpoint of labor saving and energy saving in an existing factory.

  Moreover, according to the tapping apparatus of the melting furnace of claims 4 and 5 according to the present invention, the molten metal can be supplied from the tapping chamber by automatic sequence control by linking with the hot water distribution apparatus in the subsequent process, and The supply amount can be reliably controlled. In addition, a low-pressure variable-pressure blower that leads to energy saving can be adopted. Further, according to the degassing apparatus for a molten metal holding furnace according to claims 6 to 8 of the present invention, the degassing process of the molten metal corresponding to the rate of the molten metal from the ladle is automatically performed by linking with the hot water distribution apparatus in the previous process. In addition, it is possible to perform automatic sequence control and reliably perform the inert gas supply amount control and the rotational speed control of the rotor blades. As a result, unmanned work and the quality of the molten metal can be maintained. Moreover, according to the fully automatic molten metal conveyance processing system of claim 9 according to the present invention, a plurality of apparatuses are associated with each other centering on the hot water distribution apparatus, and the conveyance and processing work of the molten metal from the melting furnace to the molten metal holding furnace is performed. It can be automated, leading to unmanned, energy saving, and molten metal maintenance.

FIG. 1 is a melting / casting plant to which a non-ferrous metal melt hot water distribution apparatus according to an embodiment for carrying out the present invention is applied, wherein (a) is a layout diagram, and (b) is a hot water distribution apparatus and a melting furnace. The side view which shows the engagement with a hot water supply apparatus, (c) is a side view which shows the engagement with a hot water distribution apparatus and a molten metal holding furnace. FIG. 2 is a hot water distribution apparatus for molten non-ferrous metal according to an embodiment for carrying out the present invention, wherein (a) is an overall front view, (b) is an overall cross-sectional view taken along arrow A in (a), (c) is sectional drawing of the ladle in the B arrow view of (b), (d) is sectional drawing of the ladle in the C arrow view of (b). FIG. 3 is a schematic longitudinal sectional view of a melting furnace tapping apparatus according to an embodiment for carrying out the present invention. FIG. 4 is a degassing apparatus for a molten metal holding furnace according to an embodiment for carrying out the present invention, in which (a) is a schematic plan view of the molten metal holding furnace, and (b) is a view of arrow A in (a). Sectional drawing, (c) is a sectional view taken along arrow B in (a).

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a melting / casting plant to which a non-ferrous metal melt hot water distribution apparatus according to an embodiment for carrying out the present invention is applied, wherein (a) is a layout diagram, and (b) is a hot water distribution apparatus and a melting furnace. The side view which shows the engagement with a hot water supply apparatus, (c) is a side view which shows the engagement with a hot water distribution apparatus and a molten metal holding furnace. FIG. 2 is a hot water distribution apparatus for molten non-ferrous metal according to an embodiment for carrying out the present invention, wherein (a) is an overall front view, (b) is an overall cross-sectional view taken along arrow A in (a), (c) is sectional drawing of the ladle in the B arrow view of (b), (d) is sectional drawing of the ladle in the C arrow view of (b). FIG. 3 is a schematic longitudinal sectional view of a melting furnace tapping apparatus according to an embodiment for carrying out the present invention. FIG. 4 is a degassing apparatus for a molten metal holding furnace according to an embodiment for carrying out the present invention, in which (a) is a schematic plan view of the molten metal holding furnace, and (b) is a view of arrow A in (a). Sectional drawing and (c) are sectional views of the arrow B in (a).

  FIG. 1 (a) shows an example of a layout of a die-cast melting / casting plant 100 to which the non-ferrous metal molten metal distribution device 1 is applied. Two melting furnaces 20 and six molten metal holding furnaces 40 are A suspension rail 5 having a U-shaped layout on which one hot water distribution apparatus 1 travels is disposed on both sides. Further, four die cast machines 101 are attached to the molten metal holding furnace 40 in this example. The hot water distribution device 1 is suspended under the suspension rail 5 and travels to convey the molten metal from the two melting furnaces 20 to the six molten metal holding furnaces 40. This layout is not limited to FIG. 1 (a), and can be arranged along the suspension rails 5 arranged in the I-type and L-type. It can be selected as appropriate in consideration of physical distribution.

  FIG. 1 (b) is a side view showing the contact between the hot water inlet 2 b of the ladle 2 of the hot water distribution apparatus 1 and the hot water outlet 22 d of the hot water apparatus 21 attached to the melting furnace 20, and the ladle 2 is a lifter device. 7 expands and descends downward, and the molten metal 50 from the hot water outlet 22d of the hot water outlet device 21 is received at the hot water inlet 2b of the pan 2. FIG. 1 (c) is a side view showing the contact between the tapping pipe 2 a of the ladle 2 of the hot water distribution apparatus 1 and the hot water trough 41 a of the degassing apparatus 41 of the molten metal holding furnace 40. The apparatus 7 contracts and rises, discharges the molten metal 50 from the hot water discharge pipe 2a, and receives the hot water in the hot water receiving tank 41a of the degassing apparatus 41.

  Referring to FIG. 2, a hot water distribution device 1 for molten non-ferrous metal will be described. The hot water distribution device 1 is suspended from two parallel suspension rails 5 and is self-propelled, and is orthogonal to the suspension rails 5. The ladle 2 is provided with a tapping pipe 2a on the end surface in the direction to be held and has a hot water inlet 2b at a position opposite to the tapping pipe 2a to hold the molten metal 50, and a tilting bearing 3a having the tapping pipe 2a as an axis. A support frame 6 that rotatably supports the ladle 2, a ladle tilting device 3 that tilts the ladle 2 upward from a horizontal position with the tapping pipe 2 a as an axis, and pours the molten metal 50; The lifter device 5 is provided mainly between the support frame 6 and moves up and down the support frame 6 that supports the ladle 2.

  As shown in FIG. 2c, the ladle 2 has a pentagonal cross section and a vertical box shape, and is lined entirely with a refractory 2f. Further, a refractory-lined tapping pipe 2a is provided at one end above the ladle 2 so as to protrude outward from the side wall. FIG. 2 b also shows the positional relationship between the tapping pipe 2 a and the hot water tank 41 a of the degassing device 41 of the molten metal holding furnace 40. Further, as shown in FIGS. 2a and 2d, the refractory 2f lining hot water inlet 2b is provided in a bowl shape in parallel with the tapping pipe 2a at the other upper end of the ladle 2, and its bottom surface is on the ladle side. Even if the ladle 2 tilts due to the downward slope, the molten metal 50 does not overflow. FIG. 2d also shows the positional relationship between the hot water outlet 22d of the hot water outlet 21 of the melting furnace 20 and the hot water inlet 2b. In addition, the upper portion of the ladle 2 is provided with a heater 2d on the inner side and a lid 2c of a refractory 2f lined with an elevating type level gauge 2e. Prevent descent and oxidation. The size of the ladle 2 in this example is 700 to 750 mm long, 750 mm wide, 460 mm deep (250 mm molten metal depth), and the capacity is about 300 kg in Al.

  Further, the ladle 2 is supported at the lower end of the support frame 6 by a tilt bearing 3a that is provided so as to be rotatable about the tapping pipe 2a and a tilt bearing 3a that is provided on the opposite side wall. In the ladle 20, the two tilt chains 3b driven by the ladle tilting device 3 are fastened to the ladle 2 by a fastening portion 3c at the lower end of the ladle 2, and the tilting chain 3b is pulled or pulled out. The tilt bearing 3a is rotated about the axis and tilted. In FIG. 2a, a state where the ladle 2 is in a horizontal state is indicated by a solid line, and a state where the ladle 2 is at a maximum tilt position is indicated by a dotted line.

  As described above, according to the tilting operation of the ladle 2 according to the present invention, the discharge of the molten metal 50 from the ladle 2 is performed by concentrating the flow of the molten metal at the outlet as in the conventional ladle. There is no need, and since the molten metal 50 can be discharged on the extended line of the tapping pipe 2a, it is not necessary to make a complicated shape like a cubic curve like a conventional ladle, and the box shape has a polygonal cross section. Therefore, the production of the ladle 2 body and the enforcement of the refractory 2f are easy. Further, when the ladle 2 is tilted to discharge the hot water, the position of the outlet of the hot water pipe 2a can be fixed without moving into the hot water, so that the transfer of the molten metal 50 to the subsequent process becomes extremely easy. Moreover, the adjustment of the hot water discharge speed can also be performed finely by the tilting operation by the tilting chain 3b. Moreover, as mentioned above, since the shape of the ladle 2 is a simple shape, it is possible to finely adjust the tapping speed by the tilting angle of rotating the ladle 2, and to accurately estimate the remaining amount of the molten metal. it can.

  The suspension travel device 4 is composed of four sets of suspension travel wheels 4a that travel while being fitted to two parallel suspension rails 5 and two sets of travel bearings 4b that support the suspension travel wheels 4a. The middle two sets of the suspension traveling wheels 4a are placed on the traveling adjustment device 4c, have self-alignment so that they can travel smoothly on the curved portion of the suspension rail 5, and also function as driving wheels for traveling. .

  The lifter device 7 is provided between the suspension traveling device 4 and the horizontal beam of the support frame 6, and is intended to move the support frame 6 supporting the ladle 2 up and down, and to connect the two electric screw jacks 7 a to X. Are arranged in a shape. By extending or shortening the electric screw jack 7a, the total height of the lifter device 7 is changed, and as a result, the support frame 6 is moved up and down. By this action, it becomes possible to freely adjust the height positions of the tapping pipe 2a and the hot water inlet 2b of the ladle 2, that is, the distance with respect to the suspension rail 5 as a reference. The connection can be adjusted smoothly. Further, the electric screw jack 7a is a compact device that requires only electric wiring including control, as compared with other fluid pressure jacks, and is easy to maintain.

  With this configuration, the overall height of the lifter device 5 can be kept lower than when a hoist type suspension wire is used (for example, 250 mm in this example), so that the overall height of the hot water distribution device 1 is lowered. Is possible. Thereby, the position height of the suspension rail 5 connected from the building is also reduced, which leads to a reduction in the overall height of the building 100 and leads to a reduction in the construction cost of the building 100. In addition, even a low-rise factory building that uses a conventional ladle transporter can be modified by applying the hot water supply apparatus.

  The tapping device 21 of the melting furnace 20 is a device that supplies the molten metal 50 to the hot water inlet 2b of the above-described hot water distribution apparatus 1, and is connected to the molten metal holding chamber 24 heated by the burner 20a of the melting furnace 20 at the lower part. In the middle, a communication pipe 24a provided with a tap plug 23 with a driving device 23a is provided, and a low pressure is supplied to a hot water chamber 22 having a hot water discharge pipe 22c inclined upward from the lower part and a pressurization pipe 22a connected to the upper part of the hot water supply room 22. It is comprised from the pressurization adjustment apparatus (not shown) which introduces the air by which pressure adjustment was carried out from the variable pressure blower 22b. Further, the pressure adjusting device determines the discharge pressure of the variable pressure blower 22b from the measured value of the molten metal flow level by the molten metal level meter 20b in the hot water discharge chamber 22 and the molten metal level meter 22f provided on the top of the upwardly inclined hot water discharge pipe 22c. The total amount of hot water discharged from the hot water discharge chamber 22 and the hot water discharge speed are controlled by setting and adjusting. Further, the contact between the hot water outlet 22d from the melting furnace 20 and the hot water inlet 2b of the hot water distribution apparatus 1 is easy and accurate in positioning the hot water inlet 2b of the ladle 2 with the suspension rail 5 as the origin as described above. Therefore, it is possible to match well even in automatic driving. In addition, the molten metal 50 in the hot water supply chamber 21 is measured by a thermometer 22h and held at a predetermined temperature by the immersion heater 22g.

  The molten metal 50 held in the melting furnace 20 is supplied by gravity by opening and closing the tap plug 23, and the molten metal 50 supplied from the outlet chamber 21 to the hot water distribution apparatus 1 is also in the molten metal portion of the outlet chamber 21. By increasing the surface area, hot water can be supplied by pressurizing from the pressurizing tube 22a with a low pressure (for example, 1000 mmAq) blowing pressure, and the blowing pressure can be set according to the hot water supply level of the hot water discharge chamber 21 with an appropriate amount of discharged hot water. Hot water can be supplied. Further, since the hot water discharge pipe 22c that is inclined upward is employed so that the hot water supply level meter 22f for grasping the hot water supply state is easily operated, the movement of the molten metal level can be detected more sensitively than the vertical pipe.

  The degassing device 41 of the molten metal holding furnace 40 is a device that degass and supplies the molten metal 50 from the outlet pipe 2a of the hot water distribution apparatus 1 to the molten metal holding furnace 40, and includes a hot water receiving tub 41a at the upper part and a lower part. A rotating blade 41b that includes a communication hole 41d that communicates with the molten metal holding furnace 40, is immersed in the molten metal 50, and discharges inert gas from the inert gas pipe 41c to the molten metal 50 through the rotating blade 41b. I have. The degassing device 41 discharges the inert gas at a low capacity during a period when the molten metal 50 is not introduced from the hot water distribution device 1, and discharges at a high capacity when the molten metal 50 is introduced from the receiving hot water tank 41a. In addition to this, a control device (not shown) is provided that allows the amount of inert gas to be adjusted and discharged with respect to the amount of molten metal inflow corresponding to the amount of tilting of the ladle 2 of the hot water distribution device 1. In addition, the degassing device 41 rotates at a low speed when the rotor blade 41b is not introduced into the molten metal 50, and rotates at a high speed when the molten metal 50 is introduced from the receiving water tank 41a. It has a control device (not shown) that makes it possible to adjust the rotation with respect to the molten metal inflow amount commensurate with the tilting amount of the ladle 2 of the hot water distribution device 1.

Degasser 41 of the present invention, H ₂ contained in the molten metal 50 of Al system with stirring molten metal 50, an inert gas, are removed by accompanying the bubbles caused by bubbling example N _2, Ar, Applied to improve the quality of die-cast products. The degassing device 41 is installed in front of the molten metal holding furnace 40, and the hot water distribution device 1 which is the preceding process is positioned at the outlet of the hot water pipe 2a of the ladle 2 with the suspension rail 5 as the origin as described above. Therefore, it is possible to accurately match the hot water receiving tub 41a of the degassing device 41 and the tapping pipe 2a from the hot water distribution device 1 accurately and automatically. Further, the degassing device 41 can efficiently perform the molten metal degassing process with the inert gas blowing amount corresponding to the hot water supply amount from the hot water distribution device 1 and the rotational speed of the rotary blade 41b. That is, the amount of hot water is calculated from the amount of tilting of the ladle 2 of the hot water distribution device 1, and the degassing treatment can be efficiently performed by automatically setting the amount of inert gas blown and the rotational speed of the rotary blade 41b. It is also possible to automatically execute these series of operations.

  The fully automatic molten metal transfer processing system according to the present invention includes a single or a plurality of molten metal 50 in the conveyance and processing of the molten metal 50 constituted by the hot water distribution apparatus 1, the tapping apparatus 21 of the melting furnace 20 and the degassing apparatus 41 of the molten metal holding furnace 40. Comprehensive computer for transport and processing of the molten metal 50 with the hot water distribution apparatus 1 according to the present invention interposed in the melting / casting factory 100 composed of the melting furnace 20 and a plurality of molten metal holding furnaces 40 by automatic running and automatic operation. It is done by. That is, by this system, the molten metal 50 is transferred from the molten pool of one or a plurality of melting furnaces 20 to the molten metal pools of the plurality of molten metal holding furnaces 40 with a degassing process. Therefore, the configuration of the present system is an automated system of three operations of a hot water distribution operation of the hot water distribution apparatus 1, a tapping operation of the melting furnace 20, and a degassing processing operation associated with receiving hot water of the melting holding furnace 40, and It is an automated system that is linked to each other. Tables 1, 2 and 3 show the flow sheets for automating these three tasks.

  Table 1 shows a flow sheet of the hot water distribution operation of the hot water distribution apparatus 1, and mainly includes sequence control and ON / OFF control. These controls are desirably performed by a machine-side computer mounted on the hot water distribution apparatus 1. Moreover, the hot water preparation preparation completion command and the completion signal transmission in the middle of the sequence are transmitted to the machine-side computer that controls the hot water discharge device 21 of the melting furnace 20, which is the previous process, and linked to the hot water work sequence control. Also, the expiration signal transmission is transmitted to the machine side computer that controls the degassing apparatus 41 of the melting and holding furnace 40, which is a subsequent process, and is linked to the degassing work sequence control.

  Table 2 shows a flow sheet for the tapping operation of the melting furnace 20, and mainly includes sequence control and ON / OFF control. These controls are preferably performed by a machine-side computer of the melting furnace 20. In addition, the hot water preparation preparation completion command and the expiration signal transmission from the hot water distribution apparatus 1 serve as a timing trigger in the hot water operation sequence control.

  Table 3 shows a flow sheet for degassing work of the molten metal holding furnace 40, and the sequence control is mainly used. This control is preferably performed by a machine-side computer of the molten metal holding furnace 40. Moreover, the expiration signal transmission from the hot water distribution apparatus 1 becomes a timing trigger in the degassing work sequence control.

  In the above-described fully automatic molten metal transfer processing system, the hot water distribution apparatus 1 travels and processes the molten metal 50 composed of the hot water distribution apparatus 1, the tapping apparatus 21 of the melting furnace 20, and the degassing apparatus 41 of the molten metal holding furnace 40. The molten metal 50 is transported and processed by each machine side computer in connection with the operation, and the melting furnace and the molten metal holding furnace between the single or plural melting furnaces 20 and the plurality of molten metal holding furnaces 40 are used. It is desirable that the number is specified by the parent computer of the factory process management. Of course, the above-described series of computer control can be controlled by a parent computer for process management in a factory.

  In a melting / casting factory for non-ferrous metals such as aluminum alloys or zinc alloys, it is possible to perform automated operation in the transportation and processing of molten metal from a plurality of melting furnaces to a plurality of molten metal holding furnaces, and it can be used in the field of die casting and transportation logistics.

1. Hot water distribution device 2: Ladle 2a: Outlet pipe 2b: Receiving port 2c: Lid 2d: Heater 2e: Level meter 2f: Refractory 3: Ladle tilting device 3a: Tilt bearing 3b: Tilt chain 3c: Fastening portion 3d: Tilt axis 4: Suspension travel device 4a: Suspension travel wheel 4b: Travel bearing 4c: Travel adjustment device 5: Suspension rail 6: Support frame
7: Lifter device 7a: Electric screw jack 20: Melting furnace 20a: Burner 20b: Level meter 21; Hot water device 22: Hot water chamber 22a: Pressurizing pipe 22b: Blower 22c: Hot water pipe 22d: Hot water outlet 22f: Hot water level gauge 22g: Immersion heater 22h: Thermometer 23: Tap plug 23a: Drive device
24: molten metal holding chamber 24a: communication pipe 25: refractory 40: molten metal holding furnace 40a: holding chamber 41: degassing device
41a: Hot water tank 41b: Rotary blade 41c: Inert gas pipe 41d: Communication hole 42: Hot water outlet 43: Immersion heater 44: Refractory 50: Molten metal 100: Melting / casting factory 101: Die casting machine

Claims (9)

  A hot water distribution apparatus that receives molten metal from one or a plurality of melting furnaces and transports the molten metal to a plurality of molten metal holding furnaces, and a suspension traveling apparatus that suspends and travels from two parallel suspension rails, and is orthogonal to the suspension rails A ladle provided with a tapping pipe on the end face in the direction and having a hot water inlet at a position facing the tapping pipe, and a support frame that rotatably supports the ladle by a bearing portion having the tapping pipe as an axis; A ladle tilting device that tilts the ladle upward from a horizontal position with the tapping pipe as an axis, and a support frame that is coupled to the suspension travel device and the support frame and supports the ladle is moved up and down. A non-ferrous metal molten metal distribution device composed of a lifter device.   2. The non-ferrous metal molten metal distribution device according to claim 1, wherein the lifter device has a configuration in which two electric screw jacks are arranged in an X shape.   The molten metal capacity of the ladle is 80 to 1000 kg, The hot water distribution apparatus for molten nonferrous metal according to claim 1 or 2.   4. A non-ferrous metal molten metal distribution device according to claim 1, wherein the tap is connected to a molten metal holding chamber of a melting furnace at a lower portion thereof. And a pressurization pipe that introduces pressure-controlled air from a low-pressure variable pressure blower into a hot water supply room having a hot water discharge pipe inclined upward from the lower part and a pressurization pipe connected to the upper part of the hot water supply room. A melting furnace tapping device comprising a regulating device.   The pressurization adjusting device sets and adjusts the discharge pressure of the variable pressure blower by using a molten metal level in the hot water discharge chamber and a hot water level sensor provided at the top of the upwardly inclined hot water discharge pipe to control the total amount of discharged hot water and the hot water discharge speed. The melting furnace tapping apparatus according to claim 4.   4. The non-ferrous metal molten metal distribution apparatus according to claim 1, wherein the apparatus is a degassing apparatus for a molten metal holding furnace for supplying molten metal from the tapping pipe, comprising an upper hot water tank and a molten metal held at the lower part. A degassing device for a molten metal holding furnace comprising a communication hole that communicates with a furnace, a rotating blade that is immersed in the molten metal and that discharges an inert gas from the rotating blade portion.   The inert gas is discharged at a low capacity during a period when the molten metal is not introduced, and is discharged at a high capacity when the molten metal is introduced from the hot water tank. In addition, the amount of tilting of the ladle of the hot water distribution apparatus The degassing apparatus for a molten metal holding furnace according to claim 6, wherein the amount of inert gas is adjusted with respect to the amount of molten metal inflow suitable for the discharge.   The rotor blades rotate at a low rotation rate during the period when the molten metal is not introduced, and rotate at a high rotation rate when the molten metal is introduced from the hot water tank. 7. A degassing apparatus for a molten metal holding furnace according to claim 6, wherein the rotation is adjusted with respect to a suitable molten metal inflow amount.   In the non-ferrous metal molten metal transport process composed of the hot water supply device, the hot water discharge device of the melting furnace, and the degassing device of the molten metal holding furnace, the designation of the melting furnace to discharge hot water, the designation of the molten metal holding furnace to receive hot water, and the amount of hot water distribution Based on this setting, the amount of hot water control of the hot water supply device of the melting furnace, the running control of the hot water supply device, the hot water receiving / Each control such as tapping control and degassing control of molten metal holding furnace degassing equipment is sequenced, systematically and comprehensively using sequence control and control of pressure, weight, flow rate, temperature, etc. by computer. A fully automatic molten metal transfer processing system.

Images